CVE-2017-14170
First published: Thu Sep 07 2017(Updated: )
In libavformat/mxfdec.c in FFmpeg 3.3.3 -> 2.4, a DoS in mxf_read_index_entry_array() due to lack of an EOF (End of File) check might cause huge CPU consumption. When a crafted MXF file, which claims a large "nb_index_entries" field in the header but does not contain sufficient backing data, is provided, the loop would consume huge CPU resources, since there is no EOF check inside the loop. Moreover, this big loop can be invoked multiple times if there is more than one applicable data segment in the crafted MXF file.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| FFmpeg | =3.3.3 |
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Reference Links
- http://www.debian.org/security/2017/dsa-3996
- http://www.securityfocus.com/bid/100700
- https://github.com/FFmpeg/FFmpeg/commit/900f39692ca0337a98a7cf047e4e2611071810c2
- https://github.com/FFmpeg/FFmpeg/commit/f173cdfe669556aa92857adafe60cbe5f2aa1210
- https://lists.debian.org/debian-lts-announce/2019/01/msg00006.html
Frequently Asked Questions
What is the severity of CVE-2017-14170?
CVE-2017-14170 is classified as a denial of service (DoS) vulnerability due to excessive CPU consumption.
How do I fix CVE-2017-14170?
To mitigate CVE-2017-14170, upgrade FFmpeg to version 3.4 or later, where the issue has been addressed.
What software is affected by CVE-2017-14170?
CVE-2017-14170 affects FFmpeg versions from 2.4 to 3.3.3.
What is the impact of exploiting CVE-2017-14170?
Exploiting CVE-2017-14170 can lead to significant CPU consumption, potentially causing service disruptions.
How can I determine if my system is vulnerable to CVE-2017-14170?
You can check the version of FFmpeg installed on your system; if it is between 2.4 and 3.3.3, then it is vulnerable to CVE-2017-14170.
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